John F Sheridan bought $102k of TNDM
PRESIDENT & CEO at TANDEM DIABETES CARE INC. 10,000 shares at an average of $10.23, traded Aug 11, 2025, filed Aug 11, 2025.
Score components
- +25RoleCEO
- +10Trade size$102k at market
- +3Relative to holdingsHoldings up 10%
- +18Price context0% above the 52-week low; 78% below the 52-week high
- +8Cluster2 insiders buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
What happened after comparable buys
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m +22.3%, 3m +61.8%, 6m +86.8%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001438133-25-000165, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Aug 11, 2025 | POpen-market purchase Common Stock | +10,000 | $10.23 | $102k | 106,327 | Aug 11, 2025 |
Related signals
Other insiders at TANDEM DIABETES CARE INC and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 0Weak | TANDEM DIABETES CARE INC | Mark David Novara EVP & CHIEF COMMERCIAL OFFICER | $4,310 187 shares | -0% | |
| 0Weak | TANDEM DIABETES CARE INC | Mark David Novara EVP & CHIEF COMMERCIAL OFFICER | $46 2 shares | -0% | |
| 69Notable | TANDEM DIABETES CARE INC | Leigh Vosseller EVP & CHIEF FINANCIAL OFFICER | $149k 13,720 shares | +116% | |
| 40Moderate | TNDMbuy TANDEM DIABETES CARE INC | Jean-Claude Kyrillos EVP & Chief Operating Officer | $191k 10,538 shares | - | |
| 45Moderate | TNDMsell TANDEM DIABETES CARE INC | Kim D Blickenstaff director | $1.2M 40,000 shares | -19% | |
| 23Weak | TNDMbuy TANDEM DIABETES CARE INC | Mark David Novara EVP & CHIEF COMMERCIAL OFFICER | $12k 532 shares | - | |
| 48Moderate | TNDMsell TANDEM DIABETES CARE INC | Dick Allen director | $258k 5,000 shares | -100% | |
| 39Weak | TNDMbuy TANDEM DIABETES CARE INC | Dick Allen director | $95k 5,000 shares | +33% | |
| 54Moderate | TANDEM DIABETES CARE INC | Shannon Marie Hansen Chief Legal Officer | $30k 1,935 shares | - | |
| 68Notable | TANDEM DIABETES CARE INC | Leigh Vosseller EVP & CHIEF FINANCIAL OFFICER | $95k 6,200 shares | +110% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.